Questions:
1. Energy is ---------when an n=4 to n=2 transition occurs and it is---------when an electron adds to the H+ion and ends up in the n=3 shell.
a) destroyed. created
b) emitted, created
c) absorbed. emitted
d) emitted, absorbed
e) emitted, emitted
2. Calculate AE if q = 1.40 kJ and w = - 658 J.
a) - 657 k.7
b) 0.742 k3
c) 1.4 kJ
d) 2.06 kJ
e) -657 J
3. Arrange the following kinds of electromagnetic radiation in order of increasing wavelength: infrared, green light, red light, radio waves. X-rays. ultraviolet light
a) X-rays. ultraviolet light. green light. red light, infrared. radio waves
b) infrared, red light, green light, radio waves, ultraviolet light X-rays
c) radio waves. infrared. red light, green light, ultraviolet light, X-rays
d) X-rays. radio waves, ultraviolet light. infrared. red light. green light
e) infrared, green light, red light, radio waves, X-rays. ultraviolet light
4. The photoelectric effect is
a) the ejection of electrons by a metal when struck by light
b) the darkening of photographic film when exposed to an electric field
c) the production of current by silicon solar cells when exposed to sunlight
d) the absorption of electrons by a metal when struck by light
e) the total reflection of light by metals giving them their typical luster
5. What is the only possible value of mi for an electron in an s orbital?
a) 0
b) 1/2
c) 1
d) 2 el 3/2